Spec\Dumplie\Metadata\Schema\Field\DateTimeFieldSpec::it_can_serialize_datetime_values PHP Метод

    function it_can_serialize_datetime_values()
    {
        $this->serialize(new \DateTimeImmutable("2004-02-12T15:19:21", new \DateTimeZone('UTC')))->shouldReturn("2004-02-12T15:19:21+00:00");
    }